Necropolis of Mirrors

Magister Gumas
Easy boss, tank and spank. Nothing really special. 1st boss Necropolis of mirrors you need to keep 1 interrupt stun so his holy aura (less hit rate) won't be casted. You could also do this for his aoe attacks.

Androlier's Shadow
It's pretty much an easy boss, but at some point she copies herself a couple of times. Kill the adds and most of all, keep them off the healers. He also uses the special ability Mirror Shell. It can also cast the spell mentioned under 2) of Andolier's Prisoner, but less regularly than the Prisoner does.

Androlier's Strength
High damage, and fears now and then. Need a good tank for this and good healers. He also uses the special ability Mirror Shell. Summons 'weak' adds.

Androlier's Prisoner
1) Androlier's Prisoner has an AoE fear with a range of about 200-250.

2) He has a spell that he cast (with-in 10 seconds I think) on the person with the most aggro called Renaissance or something like that. This spell puts a debuff on the person with the most aggro that gives them an AoE (about 100-150 range) that hurts the other people in the party only! A level 50 K/W had it and was hitting me (4.5K PDef) for 1k every 5 seconds even when he was feared! The spell wears off about 20 seconds AFTER you kill Androlier's Prisoner.{Credits to Toimu for new info on boss}

3) To avoid it's special Ability, Impact of Resonance, the skill is based on Physical Damage, if you have an experienced higher level/geared mage/priest he/she could tank it (For experienced group)!

Krodamar & Krodamon
You can pull them 1 by 1, just look at their walking pattern. Kill the speedy's around you to get a safe spot, and tank it there. Both of these bosses have quite high damage and spawn speedies (every 25%). Let some AoE'er take care of those adds. Also it has high AoE, so it's def adviced for other close DPS'ers to stand back when it AoE's. Both bosses are about the same. 1 has a Berserk which deals high damage. The other one has a shield which makes you unable to attack him for a while.

They both provide a keypart, use both keyparts and you can open the chest in the middle for loot.